melnicek.github.io/flaginator.html at master · melnicek/melnicek.github.io · GitHub

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<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<title>flaginator</title>
	<link rel="stylesheet" href="">
</head>
<body>
	<input type="text" id="prefix" value="flag" placeholder="flag">
	<input type="text" id="string" placeholder="this is only a test flag!!" autofocus>
	<button onclick="flaginate()">Flaginate</button>
	<hr>
	<p id="result">flag{TH15_IS_0nly_A_tEst_flag!!}</p>

	<script type="text/javascript">
		function flaginate_char(char) {
			let substitutions = ["Aa4", "Bb", "Cc", "Dd", "Ee3", "Ff", "Gg", "Hh", "Ii1", "Jj", "Kk", "Ll", "Mm", "Nn", "Oo0", "Pp", "Qq", "Rr", "Ss5", "Tt", "Uu", "Vv", "Ww", "Xx", "Yy", "Zz2"];
			for (var i = 0; i < substitutions.length; i++) {
				if ( substitutions[i].indexOf(char) >= 0) {
					return substitutions[i][Math.floor(Math.random() * substitutions[i].length)];
				}
			}
			if ( char === " " || char === "_" ) {
				return "_";
			}
			return char;
		}
		function flaginate() {
			let prefix = document.getElementById("prefix").value;
			let string = document.getElementById("string").value;
			let result = "";
			for (var i = 0; i < string.length; i++) {
				result += flaginate_char(string[i]);
			}
			document.getElementById("result").innerHTML = prefix + "{" + result + "}";
		}
	</script>
</body>
</html>